基于变换函数的船体曲面参数化修改技术研究

Parametric Ship Hull Form Transformation Based on Transformation Function

为实现基于CFD的船型自动优化,需要一种参数化的船体型线生成方法.文中改进了一种基于变换函数的船型参数化方法,以使变换船型更丰富、合理,该方法可以通过改变几个参数即可实现船体型线的自动生成.研究表明,只要选择合适的变换函数,参数的取值范围合理,则可以保证变化后的船型仍然满足光顺性等特征.以1 300TEU集装箱船和戴维泰勒水池DTMB5415标模为例,阐述了基于变换函数的船体型线变换过程,结果表明,基于变换函数的船型变换方法可以应用于船型精细优化中.

To realize hull form automatic optimization based on CFD, it needs a parametric hullform generation method. A ship modified method based on transformation function is improved in the arti- cle; this method can realize automatic generation of ship hull form only by varying several parameters. Research shows that, as long as suitable for transformation function by choice, and reasonable ranges of parameters, it can ensure the hull form still fairness and other characteristics. Take two different types of hull form transformation of 1300TEU container ships and DTMB5415 for example, it illus- trates the process of hull form transformation based on the transformation functions. The results indi- cate that, the hull form transformation method based on the transformation functions can be applied to the hull form optimization based on the CFD.